Filed under 'Finley Lockwood'

Lisa Marie Presley debuts her 3-month-old twin girls Finley and Harper in the new issue of PEOPLE.

"I really wanted these babies," said the 40-year-old mom, who tried for two years to get pregnant before conceiving the twins. "My blood was too thick and would clot, which caused several miscarriages. The moment I took blood thinners, I got pregnant."

Lisa Marie and her husband Michael Lockwood, 47, also share their Los Angeles home with her children from a previous marriage: daughter Riley, 19, and son Benjamin, 16. Elvis Presley's only daughter said it is "chaotic bliss" in their home.

Lisa Marie also opened up about losing the baby weight after the twins. "I was unable to see my toes by the fourth month. But I only gained 30 lbs. total. I worked out up until the seventh month."